JP2006316588A - Door lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock device enabling the service alternation of a latch. <P>SOLUTION: A latch bolt 70 comprises a front body 71, a rear body 72, a latch head 73 swingably supported on the front part of the front body, and a latch service alternation mechanism 80 for joining or unjoining both bodies. A latch bolt drive body is pivotally supported in a latch case, and the side faces of both bodies partly form a joined part movable relative to each other in a predetermined range along a latch advancing/retreating directions in the state of coming into contact with each other or in the state of being in proximity to each other. The door lock device comprises a latch bolt return spring to energize the front body in a projecting direction. The latch bolt drive body is engaged with the rear body to drive that body rearward. The door lock device further comprises a stopper to lock the latch bolt drive body at a position where the front end face of the front body is retreated from the front face of a front member in the state of both bodies integrally joined to each other. The latch service alternation mechanism joins or unjoins both bodies when the overall length of the both bodies in a combined state is shortest. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door locking device provided with a latch bolt, and more particularly to a door locking device provided with a mechanism capable of easily changing the direction in which the inclined surface of the latch head faces, that is, so-called latch self-replacement. is there.

  The doors with hinges that are attached to the doorway of the room have an outer door and an inner door, and the inclined surface of the latch head of the lock device attached to each door faces the room in the case of the outer door. In the case of an inner opening door, it is set in the outdoor direction. In the conventional lock device, in order to change the direction of the latch head, so-called latch self-replacement, remove and disassemble the screws that assemble the lock case, further disassemble the internal device, and the direction of the latch head It was performed in the procedure of changing and reattaching and reassembling the device and the lock case.

  There is a case where it is necessary to replace the latch arbitrarily at the material procurement stage of the construction work or at the construction work site. In this case, it is convenient if the latch can be replaced without disassembling the lock device, and the work efficiency can be improved. For this reason, it was considered that the latch was replaced by operating from the outside of the lock case without disassembling the lock case (see, for example, Patent Document 1).

Japanese Patent Application No. 50-12360 (FIGS. 1 and 2).

  The present invention seeks to provide a highly reliable door locking device that can be freely replaced by a latch without disassembling the lock case according to a principle and structure different from those of the prior art.

  The present invention solves the above-mentioned problem, and the invention according to claim 1 is a door locking device including an empty lock having a latch bolt, wherein the latch bolt includes a front main body, a rear main body, It is composed of a latch head supported so as to be pivotable around the forward and backward direction of the latch bolt on the front portion of the front body, and a coupling / decoupling switching mechanism for coupling or uncoupling the front body and the rear body. A latch bolt driving body that rotates in conjunction with the operation of the disengaging operation member mounted on the outer surface of the door is pivotally supported in the empty lock case, and at least part of the side surfaces of the front body and the rear body are mutually connected. A latch bolt return spring is provided, which forms a coupling portion that can move within a predetermined range along the latch advance / retreat direction while being in contact with or approaching the latch, and urges the front body in the protruding direction at all times. Bolt drive Engages with the rear body and drives the rear body rearward, and the latches so that the front end surface of the front body is in a position retracted from the front surface of the front member when the two bodies are integrally coupled to each other. A stopper member for locking the bolt drive body is provided, and the coupling / decoupling release switching mechanism provided across the two main bodies is integrated when the total length of the two main bodies is the shortest. The present invention relates to a door locking device characterized in that it can be connected to or released from the door.

  According to a second aspect of the present invention, in the door locking device according to the first aspect, the coupling / disengagement switching mechanism between the front body and the rear body projects from the rear body side of the front body. A locking projection, a self-replacement shaft insertion hole provided in the rear main body so as to be able to engage with the locking projection, the front replacement shaft insertion hole and the locking projection and penetrating the front portion A self-replacement shaft integrally coupled to the main body, a self-replacement spring interposed between the rear main body and the end of the self-replacement shaft and biasing the two main bodies in contact with each other; and The rear main body comprises a guide hole connected to the self-replacement shaft insertion hole and formed forward.

  According to a third aspect of the present invention, in the door locking device according to the first aspect, the coupling / disengagement switching mechanism between the front body and the rear body projects from the front body side of the rear body. A locking protrusion, a self-replacement shaft insertion hole provided in the front main body so as to be able to engage with the locking protrusion, a self-replacement shaft insertion hole and the locking protrusion, and the tip is a rear portion. A self-replacement shaft integrally coupled to the main body, a self-replacement spring interposed between the front main body and the end of the self-replacement shaft, and biasing the two main bodies in contact with each other; The front main body comprises a guide hole connected to the self-replacement shaft insertion hole and formed rearward.

  According to a fourth aspect of the present invention, in the door locking device according to the first aspect, the coupling / uncoupling switching mechanism between the front main body and the rear main body is provided on the front main body and the rear main body. A self-replacement shaft insertion hole having the same diameter, a self-replacement shaft holding member inserted and engaged with the self-replacement shaft insertion holes of the two main bodies from the front main body side, and a self-replacement shaft insertion of the rear main body from the rear main body side A self-replacement shaft that is inserted into the hole and whose front end is integrally coupled to the self-replacement shaft holding member, and is interposed between the rear main body and the end of the self-replacement shaft, and makes the two main bodies contact each other. It comprises a self-replacement spring biased in the direction and a guide hole formed in the rear main body connected to the self-replacement shaft insertion hole and directed forward.

  According to a fifth aspect of the present invention, in the door locking device according to the first aspect, the coupling / uncoupling switching mechanism between the front main body and the rear main body is provided on the front main body and the rear main body. A self-replacement shaft insertion hole of the same diameter, a self-replacement shaft holding member inserted and engaged with the self-replacement shaft insertion holes of the two main bodies from the rear main body side, and a self-replacement shaft of the front main body from the front main body side A self-replacement shaft inserted into the insertion hole and having a distal end integrally joined to the self-replacement shaft holding member, and the front main body and the end of the self-replacement shaft are interposed between the two main bodies. It comprises a self-replacement spring that urges in a contacting direction, and a guide hole that is formed in the front body and connected to the self-replacement shaft insertion hole toward the rear.

  According to a sixth aspect of the present invention, in the door locking device according to the first aspect, the coupling / uncoupling switching mechanism between the front main body and the rear main body is provided on the front main body and the rear main body. A self-replacement shaft insertion hole having the same diameter, a self-replacement shaft that is inserted into the self-replacement shaft insertion holes of the two main bodies from the rear main body side, and the tip is integrally coupled to the front main body, the rear main body, and the self A self-replacement spring that is interposed between the ends of the exchange shaft and urges the two main bodies in contact with each other, and is connected to the self-replacement shaft insertion hole in the rear main body and formed forward. It comprises a guide hole and an engaging projection that is erected on the one main body and is engaged with the engaging hole of the other main body.

  According to a seventh aspect of the present invention, in the door locking device according to the first aspect, the coupling / uncoupling switching mechanism between the front main body and the rear main body is provided on the front main body and the rear main body. A self-replacement shaft insertion hole having the same diameter, a self-replacement shaft that is inserted into the self-replacement shaft insertion holes of the two main bodies from the front main body side, and the tip is integrally coupled to the rear main body, the front main body, and the above A self-replacement spring that is interposed between the ends of the self-replacement shaft and urges the two main bodies in contact with each other. The front main body is connected to the self-replacement shaft insertion hole and is formed rearward. The guide hole and the engaging projection that is erected on the one main body and engages with the engaging hole of the other main body.

  In the first aspect of the invention, highly reliable latch replacement is possible.

  In the invention of claim 2, by engaging the opposing contact surfaces of the two main bodies with a small tool or the like, the engagement of the two main bodies can be released, and the latch can be easily replaced.

  The invention of claim 3 has a configuration in which the positions of both the main bodies in the invention of claim 2 are reversed, and has the same effect as the preceding claim.

  In the invention of claim 4, by engaging the opposing contact surfaces of the two main bodies with a small tool or the like, the engagement of the two main bodies can be released, and the latch replacement can be easily performed.

  The invention of claim 5 has a configuration in which the positions of the two main bodies in the invention of claim 4 are reversed, and has the same effect as the preceding claim.

  In the invention of claim 6, by engaging the opposing contact surfaces of the two main bodies with a small tool or the like, the engagement of the two main bodies can be released, and the latch can be easily replaced.

  The invention of claim 7 has a configuration in which the positions of both the main bodies in the invention of claim 4 are reversed, and has the same effect as the preceding claim.

  FIG. 1 is a side view showing a protective case of the lock device 1 according to the first embodiment of the present invention with phantom lines. As shown in the figure, the locking device 1 is composed of a lock lock 30, an empty lock 60, a protective case 11 that accommodates these, and a front member 20 to which these are attached.

  In the following description, the front-rear direction of the locking device is such that the outer surface of the front member 20 is the front side (the direction of arrow F in the figure), and the side opposite to the front member 20 is the rear side (the direction of arrow R in the figure). . In the left-right direction, the left side of the person standing on the front side of the front member 20 is the left side of the lock and the right side is the right side of the lock.

  FIG. 2 is a three-side view of the lock device 1 partially showing a cross section. The protective case 11 is divided into left and right parts, and is divided into a left protective case member 11L and a right protective case member 11R. The lock lock 30 and the empty lock 60 include a lock lock case 31 and an empty lock case 61 that accommodate the respective device members. The lock case 31 and the empty lock case 61 are also divided into left and right parts and divided into a left lock case member 31L, a right lock case member 31R, a left lock case member 61L and a right empty case member 61R. (Illustrated later). The lock case members 31L, 31R, 61L, 61R are respectively coupled to the front member 20 by screws. The protective case members 11L and 11R are coupled to the lock cases by screws passing through the lock case members 31L, 31R, 61L and 61R. Openings 20 a and 20 b through which the dead bolt 50 and the latch bolt 70 can be inserted are provided at the center of the front member 20. The front member 20 is attached to the door 2 with a screw inserted through the hole 20e shown in FIG.

  3 is an enlarged sectional view taken along the line III-III in FIG. The front member 20 is formed by drawing, and has a pair of left and right mounting portions 20c and 20d that extend in the vertical direction along the left and right side edges of the central portion and bend toward the rear. The lock lock 30, the blank lock 60, and the protective case 11 are attached to the attachment portions 20c and 20d.

  4 is a five-side view of the left-side protective case member 11L constituting the protective case 11, and FIG. 5 is a five-side view of the right-side protective case member 11R. The left protective case member 11L shown in FIG. 4 has an insertion opening 11La for the thumb turn 6 for locking and unlocking the lock 30 and an insertion opening for the lever handle 7 for engaging and releasing the empty lock 60. 11Lb is provided. The right protective case member 11R in FIG. 5 is used for inserting the opening 11Ra for the lock cylinder 5 for locking and unlocking the lock 30 and the lever handle 7 for engaging and releasing the empty lock 60. An opening 11Rb is provided. Both protective case members 11L and 11R are provided with coupling screw insertion holes 11Lc and 11Rc for coupling with the final locking case 31 and the empty locking case 61, respectively. The right protective case member 11R is provided with a later-described notch viewing window 11Rn.

  Next, the configuration of the lock lock 30 will be described. In FIGS. 2 and 3, the lock lock 30 includes a lock lock case 31, a dead bolt drive body 35 that rotates according to the locking / unlocking operation by the thumb turn 6 or the lock cylinder 5, and the drive body 35. A support unit 40 that is movably supported, a dead bolt 50 that is driven by a driving body 35 to protrude and retract from the front surface of the front member 20, and a locking position and an unlocking position of the dead bolt 50 are ensured to be maintained. The holding member 55 is provided.

  6 is a five-face view of the left-hand lock case 31L constituting the lock-lock case 31, and FIG. 7 is a 5-face view of the right lock-case member 31R. The left final lock case member 31L is provided with an opening 31La into which the outer cylinder 6a of the thumb turn 6 (FIG. 3) is inserted, and the right lock case member 31R has an outer cylinder 5a (FIG. 3) of the lock cylinder 5. An opening 31Ra to be inserted is provided. The lock case members 31L and 31R are plurally erected by caulking in plate-like spacers 32 (FIG. 2) that fit into the fitting holes 31Lb and 31Rb and holes 31Lc (FIG. 6) of the left lock case member 31L. Are integrally joined by screws inserted into the screw insertion holes 31Rc (FIG. 7) of the right lock case member 31R in a state in which the space in the left-right direction is defined by the cylindrical spacer combined screw bases N1 to N3 (FIG. 2). Is done. Each lock case member 31L, 31R has guide holes 31Ld, 31Rd (FIGS. 6, 7) in which both ends of a lock pin 52 (FIG. 2) fixed to the dead bolt body 51 are slidably fitted. Is provided.

  FIG. 8 is a three-side view of the deadbolt driving body 35. FIG. 2C is a sectional view taken along line XX in FIG. The drive body 35 includes a cylindrical hub 35H and an arm-shaped cam 35A that rotates integrally with the hub 35H. The distal end of the shaft portion 6b of the thumb turn 6 and the distal end of the inner cylinder 5b of the lock cylinder 5 are engaged with the concave portions 35Ha and 35Hb at the center of the left and right of the hub 35H (FIG. 3). The shaft portion 6b of the thumb turn 6 is a member that rotates integrally with the knob portion 6c (FIG. 3). The inner cylinder 5b of the lock cylinder 5 is a member that rotates when a key is inserted.

  The cam 35A has a tip portion 35Aa that contacts the dead bolt 50, a middle thickness portion 35Ab adjacent to the tip portion 35Aa, and a thin portion 35Ac provided between the middle thickness portion 35Ab and the hub 35H. For this reason, the thickness (= horizontal width) of the cam 35A changes stepwise in the radial direction.

  On the outer periphery of the hub 35H, a flange 35Hc having the same thickness as that of the thin portion 35Ac is provided continuously in the rotation direction so as to continue to the thin portion 35Ac. This portion is sandwiched by drive member support members 41L and 41R described later so as to be rotatable. When the cam 35A rotates in the locking direction (clockwise in FIG. 2), the tip end 35Aa of the cam abuts against the lock pin 52 and moves the dead bolt 50 from the unlocked position to the locked position (the position shown in FIG. 2). When the cam 35A rotates in the unlocking direction (counterclockwise in FIG. 2), the dead bolt 50 comes into contact with the rear end portion 51a (FIG. 2) of the dead bolt body 51 to release the dead bolt 50 from the locked position. Drive to the locked position.

  9 is a five-side view of the left-side support member 41L constituting the support portion 40 of the dead bolt drive body 35, FIG. 10 is a five-side view of the right-side support member 41R, and FIG. is there. The support portion 40 formed of an assembly of these members supports the drive body 35 so as to be rotatable as a bearing, and restricts movement in the left-right direction. The left support member 41L, the right support member 41R, and the pair of left and right identical spacers 42 are integrally attached to the left and right lock case members 31L and 31R, respectively.

  The support members 41L and 41R are provided with insertion holes 41La and 41Ra for rotatably supporting the hub 35H. The pair of left and right spacers 42 are provided with insertion portions 42a that rotatably support the hub 35H. The pair of left and right spacers 42 are mounted between the left and right support members 41L and 41R, and define the distance between the support members 41L and 41R in the left-right direction. The arrangement of the left and right support members 41L and 41R and the pair of spacers 42 is shown in FIG.

  In FIG. 3, on both the left and right sides between both support members 41L and 41R and both spacers 42, a thumb turn 6 inserted from the case openings 11La and 31La, and a lock cylinder 5 inserted from the case openings 11Ra and 31Ra, Is placed. When the thumb turn 6 and the lock cylinder 5 are fastened by a pair of connecting screws 43, the support members 41L and 41R and the spacers 42 are sandwiched between the outer cylinder 5a of the lock cylinder and the outer cylinder 6a of the thumb turn. The Both support members 41L, 41R and both spacers 42 are provided with connecting screw insertion portions 41Lb, 41Rb, 42b (FIGS. 9 to 11), respectively.

  In FIG. 11, the plate-like spacer 42 includes a locking side stopper portion 42 c that defines the locking position of the cam 35 </ b> A corresponding to the dead bolt 50 that moves in the front-rear direction between the locking position and the unlocking position; An unlocking side stopper portion 42d that defines the unlocking position of the cam 35A is provided adjacent to the hub insertion portion 42a.

  In FIG. 2, a dead bolt 50 includes a rod-shaped main body 51 having a U-shaped cross section, a lock pin 52 that is a locking side abutting portion that abuts the tip 35Aa of the cam 35A at the locking position, and a front side together with the main body 51. It is provided with a sickle portion 53 that appears and disappears from the front surface of the member 20.

  The rear end portion 51a of the main body 51 constitutes an unlocking side contact portion with which the tip end portion 35Aa of the cam contacts when the cam 35A rotates in the unlocking direction. Both ends of the lock pin 52 that is held by the main body 51 and moves in the front-rear direction integrally with the main body 51 are guided by the guide holes 31Ld and 31Rd (FIGS. 6 and 7) of the left and right final locking case members, and the front-rear direction. The dead bolt 50 moves in the lock case members 31L and 31R. The sickle portion 53 is composed of three plate-like members and is rotatably supported on a support shaft 54 attached to the main body 51. The sickle portion 53 includes a flange portion 53a at the front end portion and a flange portion 53b in the vicinity of the support shaft 54. The sickle portion 53 rotates around the support shaft 54 according to the back-and-forth movement of the main body 51, and moves together with the main body 51 while changing the posture.

  In FIG. 2, the dead bolt holding member 55 is supported by the body 51 of the dead bolt 50 so as to be slidable in the vertical direction, and presses the tip end 35Aa of the cam of the driving body 35, and the pressing body 55a. A spring 55b is disposed between the main body 51 and urges the pressing body 55a so as to abut on the cam 35A. When the dead bolt 50 is in the locking position and the unlocking position, the pressing body 55a presses the cam 35A against the stopper portions 42c and 42d (FIG. 11) by the elastic force of the spring 55b, respectively, and the driving body at each of the above positions. Stabilize 35 postures. The lock lock 30 has the above-described configuration, and the dead bolt 50 moves to the lock position or the unlock position in accordance with the lock / unlock operation by the lock cylinder 5 or the thumb turn 6, thereby fulfilling the function of the lock lock.

  Next, the configuration of the blank tablet 60 will be described. 1 and 2, an empty lock 60 includes an empty lock case 61 comprising a pair of left and right empty lock case members 61L and 61R attached to the front member 20 with screws, a left and right lever handle 7, and a lever handle. 7, a latch bolt driving body 65 that rotates according to the operation of 7, a latch bolt 70 that is driven by the driving body 65 and protrudes from or retracts from the front surface of the front member 20, and biases the latch bolt 70 toward the protruding position. And a latch bolt return member 90. The latch bolt 70 includes a latch self-replacement mechanism 80.

  12 is a five-side view of the left empty tablet case member 61L, and FIG. 13 is a five-side view of the right empty tablet case member 61R. The left and right lock case members 61L, 61R are provided with drive body support holes 61La, 61Ra for rotatably supporting the hub 65H of the latch bolt drive body 65. Both lock case members 61L and 61R are left and right by a spring receiver 91 (FIG. 2) that also functions as a spacer, a fixed spring receiver 61Lc (FIGS. 2 and 12), and a cylindrical spacer / screw base N4 (FIG. 2). They are joined together by screws in a state where the distance in the direction is defined.

  The spring receiving member 91 (FIG. 2) is held in the fitting holes 61Lb and 61Rb of the empty lock case members 61L and 61R. The fixed spring receiving portion 61Lc (FIG. 12) is integrally formed with the left empty lock case member 61L, and the side protrusion is held in the fixed spring receiving fitting hole 61Rc of the right empty lock case member 61R. The columnar spacer screw base N4 has a female screw hole at the end, is erected by caulking in the hole 61Ld of the left empty lock case member 61L, and is inserted into the screw insertion hole 61Rd of the right empty lock case member 61R. The right empty tablet case member 61R is coupled by a screw.

  FIG. 14 is a two-side view of the latch bolt driving body 65. The driving body 65 includes a cylindrical hub 65H with which the shaft portion of the lever handle 7 is engaged, and a first lever 65A and a second lever 65B that extend radially outward of the hub 65H in opposite directions. It is integrally molded and rotates as a unit. A through hole 65Ha is provided at the center of the hub 65H to engage the mandrel of the shaft of the lever handle 7.

  FIG. 15 is an enlarged two-side view of the latch bolt 70. The latch bolt 70 includes a front main body 71, a rear main body 72, a latch head 73 supported on the front surface 71a of the front main body 71 so as to be pivotable about a forward / backward direction of the latch bolt, a front main body 71, and a rear part A latch self-replacement mechanism 80 that connects the main body 72 is configured. In the normal use state, when the latch is replaced, the front main body 71 and the rear main body 72 are integrated with each other by the action of the latch self-replacement mechanism 80. To do.

  FIG. 16 is an enlarged three-side view of the latch head 73. FIG. 2B is a YY sectional view of FIG. The latch head 73 includes a latch head main body 74, a latch lip 75 attached to the front portion thereof, and a latch core 76. A protrusion 74a is formed at the rear end of the latch head main body 74, and this is rotatably inserted into the through hole 71b of the front main body front surface 71a, and the center of the latch head main body 74 from the end of the protrusion 74a. The latch core 76 is screwed into the screw hole to prevent the latch head 73 from coming off. The small diameter portion at the tip of the latch core 76 reaches into the latch lip 75, and the latch lip is held. With the above structure, the latch head 73 can be rotated around the center line CC of the through hole 71b of the front main body front portion 71a.

  15 and 2, the rear end portion of the rear main body 72 is bent downward to form a contact portion 72a with which the first lever 65A of the latch bolt driving body 65 contacts. The left and right projecting portions 72b of the abutting portion 72a are fitted in guide holes 61Le and 61Re (FIGS. 12 and 13) provided in the lock case members 61L and 61R and slide in the front-rear direction. As a result, the latch bolt 70 is guided in the lock case members 61L and 61R and moved back and forth.

  In FIG. 2, the latch bolt return member 90 that urges the latch bolt 70 in the engaging direction includes a latch bolt first return spring 92 disposed between the inside of the front body front portion 71a and the spring receiving member 91. The latch bolt is disposed between a fixed spring receiving portion 61Lc provided integrally with the left lock case member 61L and a movable spring receiving member 93 supported by the left lock case member 61L so as to be movable in the front-rear direction. It consists of two return springs 94. The spacer screw base N4 functions as a stopper for setting the posture when the driving body 65 is engaged. The screw base N4 is provided at a position where the latch bolt driving body is locked so that the front end surface of the front main body is in a position retracted from the front surface of the front member in a state where the two main bodies are integrally coupled to each other. .

  A state where the tip of the latch bolt 70 protrudes from the front surface of the front member 20 (FIG. 2) is a steady state of the empty lock. When a backward force is applied to the tip of the latch bolt 70, the latch bolt 70 retracts by pressing and contracting the latch bolt first return spring 92. When the closed door is opened, the lever handle 7 is operated to rotate the driving body 65. When the driving body 65 is rotated, the driving body first lever 65A pushes the first lever abutting portion 72a at the rear end of the rear body 72, and the latch bolt 70 is retracted and the engagement is released. When the lever handle 7 is released, the latch bolt second return spring 94 pushes the drive body 65 through the second lever 65B contacting the movable spring receiving member 93 so that the drive body 65 rotates to the steady position. The first latch bolt return spring 92 pushes the inner side of the front end portion 71a of the front body to return the latch bolt 70 to the protruding state.

  FIG. 17 is an enlarged cross-sectional view of the latch self-replacement mechanism 80, and a section of the latch self-replacement mechanism 80 is shown in a part of FIG. FIG. 2B is a WW sectional view of FIG. FIG. 18 is an exploded perspective view of the latch self-replacement mechanism 80. The latch self-replacement mechanism 80 has a function of connecting the front main body 71 and the rear main body 72 and a function of releasing the connection of the front main body 71 and the rear main body 72 when replacing the latch self-described later. That is, the latch self-replacement mechanism 80 is a coupling / decoupling release switching mechanism between the front main body 71 and the rear main body 72. The latch self-replacement mechanism 80 includes a self-replacement shaft 81, a self-replacement spring 82, and a self-replacement washer 83. The hand replacement shaft 81 includes a flat large diameter end portion 81a, a large diameter portion 81b, and a small diameter portion 81c. The self-replacement spring 82 has a shape similar to a truncated cone having a small diameter at the top and a large diameter at the bottom. The inner diameter of the washer 83 can be inserted into the large diameter portion 81 b of the hand exchange shaft, and the outer diameter of the washer 83 is larger than the large diameter portion below the hand replacement spring 82. The front body 71 is formed with a self-replacement shaft insertion hole 71c, and an annular locking protrusion 71d is formed around the hole. The rear main body 72 is provided with a self-replacement shaft insertion hole 72c and a connecting hole 72d having a smaller diameter. The self-replacement shaft insertion hole 72c has such a size that the locking projection 71d of the front main body 71 can be inserted. The connecting hole 72d has such a size that the large diameter portion 81b of the self-replacement shaft 81 can be inserted. These two holes are connected via a linear communication part 72e having the same width as the diameter of the connection hole 72d. A portion composed of the connecting hole 72d and the linear communicating portion 72e is a guide hole 72f.

  The hand replacement shaft 81 is inserted through the center of the hand replacement spring 82, the center hole of the hand replacement washer 83, the hand replacement shaft insertion hole 72c of the rear body 72, and the hand replacement shaft insertion hole 71c of the front body 71. The The lower end of the self-replacement shaft 81 is fixed by caulking in the recess 71e on the lower surface of the front main body. In the normal use situation of this empty lock 60, the locking projection 71d formed around the hand replacement shaft insertion hole 71c of the front body 71 fits into the hand replacement shaft insertion hole 72c of the rear body 72, Since the rear main body 72 is pressed against the front main body 71 by the biasing force of the spring 82, the relative movement of both the main bodies 71 and 72 along the mutual contact surface is restricted, and the front main body 71 and the rear main body 72 In a state where they closely overlap each other, the coupling state of the front main body 71 and the rear main body 72 is stably maintained.

  18 and 15, notches 71n and 72n are provided on the right edges of the front main body 71 and the rear main body 72, respectively. Both notches 71n and 72n are provided with a communication space in part and are shifted in the front-rear direction. In FIG. 13, a notch viewing window 61Rn having arcs at both ends of a rectangle is provided at a position corresponding to the right side of the notch of the right empty tablet case member 61R. In FIG. 5, a circular notch viewing window 11Rn slightly larger than the notch viewing window 61Rn is provided at a position corresponding to the right side of the notch of the right protective case member 11R. In a state where the door locking device 1 is assembled, the notches 71n and 72n of the latch bolt can be seen from the outside of the protective case 11 by the viewing windows 11Rn and 61Rn. By each of the above-mentioned parts, a latch self-replacement operation is performed.

  FIG. 19 is a perspective view of a situation where the notches 71n and 72n are viewed from the viewing windows 11Rn and 61Rn. 20 and 15 (b) are views of the notches 71n and 72n as viewed from the side of the lock case. In order to replace the latch by hand, a flathead screwdriver 84 is inserted into the notches 71n and 72n from the viewing windows 11Rn and 61Rn, and is engaged with the notched ends of the front main body 71 and the rear main body 72. Twist in the direction of. As a result, a gap 85 is formed between the front main body 71 and the rear main body 72 which are in close contact with each other.

  FIG. 21 is a cross-sectional view showing a state in which a gap 85 is formed between the front main body 71 and the rear main body 72 that are in close contact with each other. When the clearance 85 is formed, the locking projection 71d of the front main body 71 comes out of the rear body self-replacement shaft insertion hole 72c, so that the front body 71 and the rear main body 72 are released from the restriction of relative movement in the front-rear direction. The At this time, the front main body 71 is pushed forward together with the latch head 73 and the latch self-replacement mechanism 80 by the biasing force of the latch bolt first return spring 92 (FIG. 2). Since the rear main body 72 is locked to the first lever 65A of the driving body 65 (FIG. 2), even if the front main body 71 moves forward, the rear main body 72 does not move. As the self-replacement shaft 81 moves, the large-diameter portion 81b of the self-replacement shaft 81 moves toward the connecting hole 72d of the rear body 72 and finally fits there. At this time, the latch head 73 is entirely exposed in front of the front member 20, and can be rotated around the center line CC of the through hole 71b of the front body front portion 71a. In this state, the minus driver 84 may be removed.

  FIG. 22 is a view showing a state in which the latch head 73 completely exposed to the front of the front member 20 is rotated 180 degrees around the center line CC of the through hole 71b of the front body front portion 71a. is there. As shown in FIG. 16, the latch head 73 has a rear end protrusion 74a of the latch head 73 rotatably inserted into a through hole 71b in the front surface of the front body 71, and is screwed into the center of the protrusion 74a. Since the latch core 76 is prevented from coming off, the entire latch head 73 can be rotated in a state where it is exposed forward from the front surface of the front member, and the latch can be replaced freely. After the direction of the latch head 73 is changed by 180 degrees, when the latch head 73 is pushed into the front member 20, the front main body 71 returns to the original position again, and the locking projection 71d has the free replacement shaft insertion hole 72c. The latch bolt returns to the normal use state shown in FIG. The latch self-replacement is completed by the above procedure.

  Claim 2 of this invention is described along the structure of the said embodiment, ie, the structure which piled up the rear part main body on the front part main body. As another embodiment, a configuration in which the front body is stacked on the rear body is also possible. Claim 3 is described along such a configuration.

  23 and 24 are views showing the difference in the direction of the inclined surface of the latch head 73 before and after replacement of the latch. The side on which the lock cylinder 5 is provided is the outdoor side of the door 2. FIG. 23 shows the direction of the inclined surface of the latch head 73 suitable for the outer opening door, and FIG. 24 shows the direction of the inclined surface of the latch head 73 suitable for the inner opening door.

  In the above-described embodiment, when replacing the latch, the rear main body 72 restrained by the latch bolt driving body 65 is turned up, and the front main body 71 moving forward by the latch bolt return spring is turned down. In this case, the guide hole 72f composed of the connection hole 72d and the linear communication portion 72e is formed toward the front of the self-replacement shaft insertion hole 72c in the rear main body to be restrained (Claim 2). A similar configuration in which the vertical positions of the two main bodies are reversed is also possible. In this case, the guide hole including the connection hole and the linear communication portion is formed toward the rear of the self-replacement shaft insertion hole in the front body 71 that moves forward (Claim 3).

  FIG. 25 is an enlarged view of an empty lock latch bolt 100 according to the second embodiment of the present invention. FIG. 25 (a) is a partial cross-sectional view, FIG. 25 (b) is a side view, and FIG. It is -Z sectional drawing. The structure of parts other than the latch self-replacement mechanism is the same as that of the first embodiment.

  The latch self-replacement mechanism 110 includes a self-replacement shaft 111, a self-replacement spring 112, a self-replacement washer 113, and a self-replacement shaft holder 114. The self-replacement shaft 111 includes a flat large diameter end portion 111a and a shaft portion 111b. The self-replacement spring 112 has a shape similar to a truncated cone having a small diameter at the top and a large diameter at the bottom. The washer 113 has an inner diameter through which the shaft part 111 b of the hand replacement shaft can be inserted, and the outer diameter of the washer 113 is larger than the large diameter part below the hand replacement spring 112. The self-replacement shaft holding member 114 includes a tubular portion 114a and a flange portion 114b having the same diameter as the width of the front body 101.

  The front main body 101 has a self-replacement shaft insertion hole 101a through which the tubular portion 114a of the self-replacement shaft holding member 114 can be inserted, and the rear main body 102 also has a self-replacement shaft insertion hole 102a having the same diameter. . The free replacement shaft insertion hole 102a of the rear body 102 is provided with a connection hole 102b having a smaller diameter, through which the shaft portion 111b of the free replacement shaft 111 can be inserted, and linear communication having the same width as the diameter of the connection hole 102b. It is connected to a self-replacement shaft insertion hole 102a via a portion 102c.

  A self-replacement shaft holding member 114 is inserted into the self-replacement shaft insertion hole 102a of the rear body 102 from the lower surface of the front body 101 through the self-replacement shaft insertion hole 101a of the front body 101. From the upper surface side of the rear body 102, the shaft portion 111b of the hand replacement shaft 111 passes through the center portion of the hand replacement spring 112, the center hole of the hand replacement washer 113, and the hand replacement shaft insertion hole 102a of the rear body 102, The free replacement shaft holding member 114 is inserted through the center hole of the free replacement shaft holding member 114 and caulked at the lower end side, so that the free replacement shaft 111 and the free replacement shaft holding member 114 are integrated.

  The diameter of the connecting hole 102b and the width of the linear communication portion 102c are such that the shaft portion of the self-replacement shaft 111 can be inserted. A portion including the connecting hole 102b and the linear communication portion 102c is a guide hole 102d.

  In the normal use situation of this empty lock, the tubular portion 114a of the self-replacement shaft holding member 114 is fitted and inserted into the self-replacement shaft insertion holes 101a and 102a of both main bodies, and both main bodies are moved by the urging force of the spring 112. Since the two main bodies 101 and 102 are pressed against each other, the relative movement along the mutual contact surfaces of the two main bodies 101 and 102 is restricted, and the two main bodies 101 and 102 are closely overlapped with each other so that the coupled state is stably maintained.

  As shown in FIGS. 25B and 25C, the flange portion 114b of the self-replacement shaft holding member 114 is provided with a slit-shaped notch 114n. The slit-shaped notch 114n may be provided on the front body 101 side. A notch viewing window similar to the case of the first embodiment is provided at a position corresponding to the right side of the notch of the right empty tablet case member and the right protective case member. In a state where the door locking device is assembled, an operation for replacing the latch is performed from the outside of the protective case through the notch viewing window. In FIG. (B), the position of the notch viewing window 105 of the right empty tablet case member is indicated by a two-dot chain line.

  In order to replace the latch without permission, a flat-blade screwdriver is inserted into the notch 114n through the notch viewing window and twisted, and the hand replacement shaft holding member 114 is pushed downward with respect to the front body 101. Then, the tubular portion 114a of the self-replacement shaft holding member 114 comes out of the self-replacement shaft insertion hole 102a of the rear main body 102, and the restriction on relative movement along the mutual contact surfaces of both the main bodies 101 and 102 is released. At this time, the front main body 101 is pushed forward together with the latch head 103 and the latch self-replacement mechanism 110 by the biasing force of the latch bolt first return spring 92 (FIG. 2). As the self-replacement shaft 111 moves, the shaft 111b of the self-replacement shaft 111 moves toward the connecting hole 102b of the rear body 102 and finally fits there. At this time, the entire latch head 103 is exposed in front of the front member 104, and the latch can be replaced freely.

  After the direction of the latch head 103 is changed by 180 degrees, when the latch head 103 is pushed into the front member 104, the front main body 101 returns to its original position, and the tubular portion 114a of the self-replacement shaft holding member 114 is moved to the rear portion. The main body 102 fits again into the self-replacement shaft insertion hole 102a, and the front main body 101 and the rear main body 102 are pressed against each other by the urging force of the self-replacement spring 112, and the latch bolt 100 is brought into a normal use state shown in FIG. Return. The latch self-replacement is completed by the above procedure.

  In the above embodiment, when the latch is replaced, the rear main body 102 restrained by the latch bolt driving body is turned up, and the front main body 101 that moves forward by the latch bolt return spring is placed downward. In this case, the guide hole 102d including the connecting hole 102b and the linear communication portion 102c is formed toward the front of the self-replacement shaft insertion hole 102a in the rear main body to be restrained (Claim 4). A similar configuration in which the vertical positions of the two main bodies are reversed is also possible. In this case, the guide hole including the connection hole and the linear communication portion is formed toward the rear of the self-replacement shaft insertion hole in the front body 101 that moves forward (Claim 5).

  FIG. 26 is an enlarged view of an empty lock latch bolt 120 according to the third embodiment of the present invention, in which FIG. 26 (a) is a partial sectional view, FIG. 26 (b) is a side view, and FIG. It is -U sectional drawing. The structure of parts other than the latch self-replacement mechanism is the same as that of the first embodiment.

  The latch self-replacement mechanism 130 includes a self-replacement shaft 131, a self-replacement spring 132, a self-replacement washer 133, and an engagement pin 134. The self-replacement shaft 131 includes a flat large diameter end portion 131a and a shaft portion 131b. The self-replacement spring 132 has a shape similar to a truncated cone having a small diameter at the top and a large diameter at the bottom. The inner diameter of the washer 133 can be inserted through the shaft portion 131 b of the hand replacement shaft, and the outer diameter of the washer 133 is larger than the large diameter portion below the hand replacement spring 132. The engaging pin 134 includes a large diameter part 134a and a small diameter part 134b.

  The front body 121 is provided with a hand replacement shaft insertion hole 121a through which the shaft portion 131b of the hand replacement shaft 131 can be inserted, and the rear body 122 is also provided with a hand replacement shaft insertion hole 122a having the same diameter. In the free replacement shaft insertion hole 122a of the rear body 122, a connecting hole 122b having the same diameter as the free replacement shaft insertion hole 122a is connected to the free replacement shaft insertion hole 122a via a linear communication portion 122c having the same width as the connection hole 122b. It is connected and becomes a long hole as a whole.

  From the upper surface side of the rear body 122, the shaft portion 131b of the hand replacement shaft 131 passes through the center portion of the hand replacement spring 132, the center hole of the hand replacement washer 133, and the hand replacement shaft insertion hole 122a of the rear body 122, The front body 121 is inserted into a self-replacement shaft insertion hole 121a, and is caulked on the lower end side and fixed to the front body 121.

  The diameter of the connecting hole 122b and the width of the linear communication portion 122c are such that the shaft portion of the hand replacement shaft 131 can be inserted. A portion formed by the connecting hole 122b and the linear communication portion 122c is a guide hole 122d.

  In the front main body 121, the small-diameter portion 134b of the engagement pin 134 is inserted and fixed in a hole formed on the front side of the self-replacement shaft insertion hole 121a. The large-diameter portion 134 a of the engagement pin 134 is a protrusion that protrudes toward the rear body 122, and is fitted into an engagement hole 135 that is formed in the rear body 122.

  In a normal use state of the empty lock, the large-diameter portion 134a of the engagement pin 134 is fitted into the engagement hole 135 of the rear main body 122, and the rear main body 122 is pressed against the front main body 121 by the biasing force of the spring 132. Therefore, the relative movement along the mutual contact surfaces of the two main bodies 121 and 122 is restricted, and the two main bodies 121 and 122 are closely overlapped, so that the coupled state is stably maintained.

  As shown in FIGS. 26 (b) and 26 (c), notches 121n and 122n are provided on the right edges of the front main body 121 and the rear main body 122 on the right side of the engagement pin 134, respectively. Both notches 121n and 122n are partially provided with a communication space and are arranged to be shifted forward and backward. A notch viewing window similar to the case of the first embodiment is provided at a position corresponding to the right side of the notch of the right empty tablet case member and the right protective case member. In a state where the door locking device is assembled, an operation for replacing the latch is performed from the outside of the protective case through the notch viewing window. In FIG. (B), the position of the notch viewing window 135 of the right empty tablet case member is indicated by a two-dot chain line.

  When replacing the latch without permission, the slotted screwdriver 126 is engaged with the notches 121n and 122n through the notch in the case and twisted to open a gap between the front body 121 and the rear body 122. The large-diameter portion 134a of the engagement pin 134 is removed from the engagement hole 135 of the rear main body 122 to release the engagement. As a result, the forward / backward relative movement restriction between the front main body 121 and the rear main body 122 is released, and the front main body 121 is replaced with the latch head 123 and the latch by the urging force of the latch bolt first return spring 92 (FIG. 2). It is pushed forward together with the mechanism 130. As the self-replacement shaft 131 moves, the shaft portion 131b of the self-replacement shaft 131 moves toward the connection hole 122b of the rear body 122 and finally fits there. At this time, the entire latch head 123 is exposed in front of the front member 124, and the latch can be replaced freely.

  After the direction of the latch head 123 is changed by 180 degrees, when the latch head 123 is pushed into the front member 124, the front main body 121 returns to the original position again, and the large diameter portion of the engagement pin becomes the engagement hole. The front body 121 and the rear body 122 are pressed against each other by the urging force of the self-replacement spring 132, and the latch bolt 120 returns to the normal use state shown in FIG. The latch self-replacement is completed by the above procedure.

  In the above embodiment, when the latch is replaced, the rear main body 122 restrained by the latch bolt driving body is turned up, and the front main body 121 moving forward by the latch bolt return spring is placed downward. In this case, the guide hole 122d composed of the connecting hole 122b and the linear communication portion 122c is formed toward the front of the self-replacement shaft insertion hole 122a in the rear main body 122 to be restrained (Claim 6). A similar configuration in which the vertical positions of the two main bodies are reversed is also possible. In this case, the guide hole including the connection hole and the linear communication portion is formed toward the rear of the self-replacement shaft insertion hole in the front body 121 that moves forward (Claim 7).

It is the side view which showed the protective case of the locking device 1 which concerns on this invention with the virtual line. FIG. 3 is a three-side view of the lock device 1 partially showing a cross section. It is the III-III cross-sectional enlarged view of FIG. It is a 5th page figure of left protective case member 11L. It is a 5th page figure of right protection case member 11R. It is a 5th page figure of 31 L of left side locking lock case members. FIG. 10 is a five-side view of the right final locking case member 31R. 3 is a three-sided view of a dead bolt drive 35. FIG. It is a 5th page figure of left side support member 41L. 5 side view of the right support member 41R FIG. 6 is a two-side view of a pair of left and right spacers 42 having the same shape. It is a 5th page figure of 61 L of left side empty tablet case members. It is a 5th page view of the right empty tablet case member 61R. 2 is a two-side view of a latch bolt driving body 65. FIG. 2 is an enlarged two-side view of a latch bolt 70. FIG. 3 is an enlarged three-side view of a latch head 73. FIG. 3 is an enlarged cross-sectional view of a latch self-replacement mechanism 80. FIG. 4 is an exploded perspective view of a latch self-replacement mechanism 80. FIG. It is a perspective view of the situation where notches 71n and 72n are viewed from notch viewing windows 11Rn and 61Rn. It is the figure which looked at notches 71n and 72n from the side of a lock case. FIG. 5 is a cross-sectional view showing a state where a gap 85 is formed between a front main body 71 and a rear main body 72. It is a figure which shows the state which rotated the latch head 73 pulled out completely 180 degree | times. It is a figure which shows the direction of the inclined surface of the latch head 73 suitable for an outward door. It is a figure which shows direction of the inclined surface of the latch head 73 suitable for an inner opening door. It is an enlarged view of the latch bolt 100 of the empty lock regarding 2nd Embodiment of this invention. It is an enlarged view of the latch bolt 120 of the empty lock regarding 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Locking device, 7 ... Lever handle, 11 ... Protective case, 11R ... Right side protective case member, 11Rn ... Notch viewing window, 20 ... Front member, 60 ... Empty lock, 61 ... Empty lock case, 61R ... Right side empty lock Case member, 61Rn ... Notch viewing window, 65 ... Latch bolt drive, 70 ... Latch bolt, 71 ... Front body, 71a ... Front body front part, 71b ... Front part through hole, 71c ... Hand replacement shaft insertion hole , 71d: locking projection, 71e: recess in the lower surface, 71n ... notch, 72 ... rear body, 72c ... hand replacement shaft insertion hole, 72d ... connection hole, 72e ... linear communication part, 72f ... guide hole, 72n ... Notch, 73 ... Latch head, 80 ... Latch self-replacement mechanism, 81 ... Self-replacement shaft, 81a ... Flat large-diameter end, 82 ... Self-replacement spring, 83 ... Self-replacement washer, 84 ... Slotted screwdriver, 85 ... Gap 91 ... Spring receiving member, 92 ... First return spring of latch bolt, 93 ... Movable spring receiving member, 94 ... C2 bolt return spring, C ... center line of front body front surface through hole, N4 ... screw base (also stopper), 101 ... front body, 102 ... rear body, 102a ... hand replacement shaft insertion hole, 102b ... connection Hole, 102c ... Linear communication part, 102d ... Guide hole, 105 ... Notch viewing window (opened in the empty tablet case), 111 ... Self-replacement shaft, 114 ... Self-replacement shaft holding member, 121 ... Front body, 121n ... Notch, 122 ... Rear body, 122a ... Self-replacement shaft insertion hole, 122b ... Connection hole, 122c ... Linear communication part, 122d ... Guide hole, 122n ... Notch, 125 ... Notch viewing window (opened in the empty tablet case) , 131... Self-replacement shaft, 131 a. Flat large diameter end portion, 131 b. Shaft portion, 134. Engaging pin, 135.

Claims (7)

In a door locking device with an empty lock having a latch bolt,
The latch bolt is a combination of the front main body, the rear main body, a latch head supported on the front surface of the front main body so as to be pivotable about the advancing and retreating direction of the latch bolt, and the front main body and the rear main body. It is composed of a coupling / uncoupling switching mechanism for releasing,
A latch bolt driving body that rotates in conjunction with the operation of the disengaging operation member mounted on the outer surface of the door is pivotally supported in the empty lock case,
At least a part of the side surfaces of the front main body and the rear main body form a coupling portion that can move within a predetermined range along the latch advance / retreat direction while being in contact with or close to each other.
A latch bolt return spring that constantly urges the front body in the protruding direction is provided,
The latch bolt driving body is engaged with the rear body to drive the rear body backward,
A stopper member is provided for locking the latch bolt driving body so that the front end surface of the front main body is in a position retracted from the front surface of the front member in a state where the two main bodies are integrally coupled to each other.
The coupling / decoupling release switching mechanism attached to both the main bodies can couple the two main bodies together or release the coupling when the combined length of the two main bodies is the shortest. There is a door locking device. The above-mentioned front body and rear body coupling / uncoupling switching mechanism is
A locking projection projecting from the rear body side of the front body;
A self-replacement shaft insertion hole provided in the rear main body so as to be able to engage with the locking protrusion,
A self-replacement shaft that penetrates the self-replacement shaft insertion hole and the locking projection and the tip is integrally coupled to the front body; and
A self-replacement spring interposed between the rear main body and the end of the self-replacement shaft and biasing the two main bodies in a direction to contact each other;
2. The door locking device according to claim 1, further comprising a guide hole formed in the rear main body and connected to the self-replacement shaft insertion hole toward the front. The above-mentioned front body and rear body coupling / uncoupling switching mechanism is
A locking protrusion projecting on the front body side of the rear body;
A self-replacement shaft insertion hole provided in the front body so as to be able to engage with the locking protrusion,
A self-replacement shaft penetrating the self-replacement shaft insertion hole and the locking projection and having a tip integrally coupled to the rear body;
A self-replacement spring interposed between the front main body and the end of the self-replacement shaft, and urging the main body in a direction to abut against each other;
The door locking device according to claim 1, comprising a guide hole formed in the front body connected to the self-replacement shaft insertion hole and directed rearward. The coupling / uncoupling switching mechanism between the front body and the rear body is
A self-replacement shaft insertion hole of the same diameter provided in the front main body and the rear main body,
A hand replacement shaft holding member that is inserted and engaged with the hand replacement shaft insertion holes of the two main bodies from the front body side,
A self-replacement shaft that is inserted from the rear main body side into the self-replacement shaft insertion hole of the rear main body and the tip is integrally coupled to the self-replacement shaft holding member;
A self-replacement spring interposed between the rear main body and the end of the self-replacement shaft, and urging the main body in a direction to abut against each other;
2. The door locking device according to claim 1, further comprising a guide hole formed in the rear main body and connected to the self-replacement shaft insertion hole toward the front. The above-mentioned front body and rear body coupling / uncoupling switching mechanism is
A self-replacement shaft insertion hole of the same diameter provided in the front main body and the rear main body,
A hand replacement shaft holding member that is inserted and engaged in the hand replacement shaft insertion holes of the two main bodies from the rear body side,
A self-replacement shaft that is inserted from the front main body side into the self-replacement shaft insertion hole of the front main body and the tip is integrally coupled to the self-replacement shaft holding member;
A self-replacement spring interposed between the front main body and the end of the self-replacement shaft, and urging the main body in a direction to abut against each other;
The door locking device according to claim 1, comprising a guide hole formed in the front body connected to the self-replacement shaft insertion hole and directed rearward. The above-mentioned front body and rear body coupling / uncoupling switching mechanism is
A self-replacement shaft insertion hole of the same diameter provided in the front main body and the rear main body,
A self-replacement shaft that is inserted into the self-replacement shaft insertion holes of the both main bodies from the rear main body side and the tip is integrally coupled to the front main body,
A self-replacement spring interposed between the rear main body and the end of the self-replacement shaft and biasing the two main bodies in a direction to contact each other;
A guide hole formed in the rear body connected to the free replacement shaft insertion hole and directed forward;
2. The door locking device according to claim 1, wherein the door locking device is provided with an engaging projection that is erected on the one main body and is engaged with an engaging hole of the other main body. The above-mentioned front body and rear body coupling / uncoupling switching mechanism is
A self-replacement shaft insertion hole of the same diameter provided in the front main body and the rear main body,
A self-replacement shaft that is inserted into the self-replacement shaft insertion holes of the two main bodies from the front main body side and the tip is integrally coupled to the rear main body,
A self-replacement spring interposed between the front main body and the end of the self-replacement shaft, and urging the main body in a direction to abut against each other;
A guide hole formed in the front body connected to the self-replacement shaft insertion hole and directed rearward;
2. The door locking device according to claim 1, wherein the door locking device is provided with an engaging projection that is erected on the one main body and is engaged with an engaging hole of the other main body.

Images